| 摘要 |
PURPOSE:To attain small size and low cost by making a low frequency reproduction possible with a large output without providing an amplifier exclusively used for low frequency reproduction. CONSTITUTION:Low frequency signals in left and right channel signals are impressed with inverted phase to the inputs of power amplifiers AL, AR provided respectively on left and right channels and other frequency components are impressed as they are. As a result, signals having stereophonic middle and high frequencies and monaural low frequency with inverted phase are applied to the amplifiers AL, AR respectively, and the middle and high frequency signals are reproduced stereophonically by speakers SL, SR and the low frequency signal is reproduced by a high output from a speaker SW. |
